/*
 * otr4j, the open source java otr library.
 *
 * Distributable under LGPL license.
 * See terms of license at gnu.org.
 */
package me.weijing.common.otr;

/**
 * 
 * @author George Politis
 * 
 */
public interface OtrPolicy {

	public static final int ALLOW_V1 = 0x01;
	public static final int ALLOW_V2 = 0x02;
	public static final int REQUIRE_ENCRYPTION = 0x04;
	public static final int SEND_WHITESPACE_TAG = 0x08;
	public static final int WHITESPACE_START_AKE = 0x10;
	public static final int ERROR_START_AKE = 0x20;
	public static final int VERSION_MASK = (ALLOW_V1 | ALLOW_V2);

	// The four old version 1 policies correspond to the following combinations
	// of flags (adding an allowance for version 2 of the protocol):

	public static final int NEVER = 0x00;
	public static final int OPPORTUNISTIC = (ALLOW_V1 | ALLOW_V2
			| SEND_WHITESPACE_TAG | WHITESPACE_START_AKE | ERROR_START_AKE);
	public static final int OTRL_POLICY_MANUAL = (ALLOW_V1 | ALLOW_V2);
	public static final int OTRL_POLICY_ALWAYS = (ALLOW_V1 | ALLOW_V2
			| REQUIRE_ENCRYPTION | WHITESPACE_START_AKE | ERROR_START_AKE);
	public static final int OTRL_POLICY_DEFAULT = OPPORTUNISTIC;

	public abstract boolean getAllowV1();

	public abstract boolean getAllowV2();

	public abstract boolean getRequireEncryption();

	public abstract boolean getSendWhitespaceTag();

	public abstract boolean getWhitespaceStartAKE();

	public abstract boolean getErrorStartAKE();

	public abstract int getPolicy();

	public abstract void setAllowV1(boolean value);

	public abstract void setAllowV2(boolean value);

	public abstract void setRequireEncryption(boolean value);

	public abstract void setSendWhitespaceTag(boolean value);

	public abstract void setWhitespaceStartAKE(boolean value);

	public abstract void setErrorStartAKE(boolean value);

	public abstract void setEnableAlways(boolean value);

	public abstract boolean getEnableAlways();

	public abstract void setEnableManual(boolean value);

	public abstract boolean getEnableManual();
}
